Sieve



FIG. 1 is a top and side perspective of a sieve, embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof, the front and rear elevation views are identical; and,

FIG. 5 is a side elevation view thereof, the left and right side elevation views are identical. 

CLAIM The ornamental design for a sieve, as shown and described. 